Abstract: A work location management server is configured to create and store records for work locations, personnel, and tasks to be performed by personnel at work locations. Each task created for a work location is configured with a work flow that may be executed by the management server to automate assignment of tasks, notifications of assignments, validation and inspection requirements, and other actions. The verifies accuracy of changes in task status by validating those changes based upon information available to the system and based upon information from sensors and devices in the possession of the personnel associated with the task. This may include validating presence at a work location using location information from a mobile device, validating metadata of images or documents submitted from a work location, and machine vision validation of receipts, documents, and other submitted images purporting to show the completion of work at a work location.

Abstract: A key blank, key and master keying system for a twisting tumbler sidebar lock of the type where the sidebar is blocked or unblocked by a selectively positioned longitudinally extending slider, has a key blank with a slider contacting surface on a rib on the blank below the bitting area at one of a plurality of selected predetermined locations. A key with skew cut bittings can be cut on the blank and the blank can be configured with the slider contacting surface at different predetermined locations. The slider contact area on the rib of the key blank can be divided into two horizontal portions at different predetermined locations and the slider itself can have contact surfaces also positioned at different predetermined locations so that a number of different master keying variations are possible.

Abstract: A key blank, key and master keying system for a twisting tumbler sidebar lock of the type where the sidebar is blocked or unblocked by a selectively positioned longitudinally extending slider, has a key blank with a slider contacting surface on a rib on the blank below the bitting area at one of a plurality of selected predetermined locations. A key with skew cut bittings can be cut on the blank and the blank can be configured with the slider contacting surface at different predetermined locations. The slider contact area on the rib of the key blank can be divided into two horizontal portions at different predetermined locations and the slider itself can have contact surfaces also positioned at different predetermined locations so that a number of different master keying variations are possible.